198 A. E. Verrill — Revision Genera and Species of Starfishes. 



Hoplaster lepidus (Sladen). 

 Pentagonaster lepidus Sladen, Voy. Chall., xxx, p. 275, pi. Ivii, figs. 1-4, 1889. 



This species agrees so closely, in all structural characters, with 

 the type of the genus, that there can be little doubt that they belong 

 to one genus. In fact, the present species might even prove to be 

 an older state of the former, to judge from the descriptions. They 

 both came from the same region and similar depths. 



Off the Azores, 1000 fathoms. 



Lasiaster Sladen. Type, L. villosus Sladen. 



General form as in Tosia and Goniaster. Marginal plates well- 

 develojDed, in both series, paired. No odd interradial. Marginal, 

 actinal, and abactinal plates covered with groups of small, acute 

 spinules. 



The general appearance of this genus is similar to Hoplaster^ Avith 

 which it may, possibly, be related, though no odd interradials are 

 present. M. Sladen refers the genus to the Gynmasteridm. 



Lasiaster hispidus (Sars) Sladen. 



Goniaster hispidus M. Sars, Fauna litt. Norveg., iii, p. 72, pi. 8, figs. 24, 25, 



1877. 

 Pentagonaster hispidus Perrier, Nouv. Arch, du Mus. d'hist. Nat., Ser. 2, vol. 



i, p. 84, 1878. Danielssen and Koren, Asteroidea, Norske Nordhavs-Exped. 



Zool., xi, p. 58, pi. XV, fig. 6, 1884. 

 Lasiaster hispidus Sladen, op. cit. , p. 372, 1889. 



Arctic coasts of Europe, especially in the Drontheim Fjord, in 

 deep water. 



The larger specimens are 72™™ in diameter. 



Mevisioyi of the Classification of the orders Vcdvata and Paxillosa 

 of Perrier, and especially of the Ar chaster idoe. 



Archasteridse Sladen, Voy. Chall., xxx, pp. 1-4, 1889. Perrier, Exp. Trav. et 

 Talism., pp. 237-252, 1894. 



In a former article (1894, pp. 266-269) I endeavored to show 

 that this extensive group is probably not a natural family. 



This opinion has been confirmed to some extent by the subsequent 

 publication of Perrier's report, quoted above, in which he discussed, 

 at considerable length, the characters of this " family," as contrasted 

 with PentagonasteridcB. He enumerated seven principal characters 

 by which the two families are distinguished. It is sufficient to state 



